Sediments and Sedimentary Processes II (January 21 & 23)

How can I make sedimentary dynamics, at least the statistical parts, interesting? The Web doesn’t help much. We could learn a bit about Sir George Gabriel Stokes (1819-1903) of Stokes’ Law. Most of the web material, though, consists of calculating pages for the Reynolds Number and the Froude Number, and the details of the Bernoulli Effect and Hjulstrom’s Diagram. Fortunately the US Government has livened things up a bit with a series of Quicktime movies of sedimentary bedforms in action, along with more than you want to know about bedform classes. This is a very nice presentation — you have many viewing choices. The USGS also provides downloadable code and software for simulating ripple and dune bedforms and crossbedding. We’ll have more pretty pictures and movies when we begin studying particular sedimentary environments.

This website will be helpful this week: The Math You Need.

Time to begin thinking about your research project for your paper. We’ll talk about your ideas in lab. Please download the list of 2020 Potential Research Paper Topics and the included form to turn in to me during your lab this week.

Here is a blog post I wrote on our glorious Ro-Tap sieving shaker system.

Sediment plume from DeGeerladen, south shore of Isfjorden, Svalbard, Norway. (Click image for larger view.)


Geology in the News –

The Universe Is Disappearing, And There’s Nothing We Can Do To Stop It.” A dramatic headline that is certainly true. This is a good article in Forbes discussing modern ideas of cosmology. The future looks very cold and dark, but at least it is a long time from now!

Can this be true? One-quarter of Americans don’t know the Earth orbits the Sun. I hope most of these people are just trolling the poll.

Stardust older than the Solar System found in the ever-so-useful Murchison Meteorite. At least 7 billion years old.

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